Author
Topic: GI problem? (Read 555 times)

I had a similar issue in a previous animation test and figured I must be missing something. I get a mix of very dark and "normal" frames running an animation. TG4, pretty much a default project with the animation check settings adopted. Any suggestions?

I don't know much about animation, but did you make a GI prepass, later called in and blended over a number of frames? Perhaps the eye is so small the GI detail needs to be raised? Or padding of ray detail or GI prepass in the render advanced tab?

Hm, I am out of luck here.Frames 1,2, and 3 render only the dark reflection. First frame in light green is frame 4.I ran a few render series during the day and had weird stuff going on in the first frames.Once frame 2 rendered half dark and half green, on one occasion the frame rendered completelyblack, even though the pre-calculated dots while rendering clearly showed the greenish colour.I also rendered the 80 frame long animation and there were a few more (3-4) darker imagesin between besides the first three frames.My system specs are in the footnote. Windows update ran the last time todaywith a few important and recommended updates installing.I am curious now what might cause this and what my machine is missing...Cheers, Klaus

I did wonder if it's down to low resources but we all have reasonably powerful systems. It's not very scientific but I do see Terragen (and other programs) simply "giving up" on some tasks, without error messages or anything.Odd ...

I'll keep an eye out for his My earth model uses around 5Gb of RAM to load at the moment before dropping back down so I'm likely to push the resources of my little laptop to the limit fairly frequently

I tried to change some different settings. There are too many things to change of course but nothing worked from what i tried. It looked at first as it was resolution depending. But then more random...it renders correctly sometimes.Kind of a bug probably. Even a basic white sphere looks sometimes much different(i am always suspious of reflection,water shaders in Terragen).Curious what the problem is.

Ben, does it do the same thing when you simply render frame 1 from the general tab, without going to the render sequence? Try unchecking GISD too. I've rendered several frames with a version that Matt gave me to try and I don't have an issue with the frames.

This issue is NOT related to rendering out sequences.In my tests I tried sequences and single frame rendering.Using the scene file bigben posted frames 1,2 and 3 are always dark (on my machine).Frame 4 is the first which renders correctly here.Hopefully the fix gets this.cheers, Klaus